Airbag control unit with part number 68402854AD

What does the airbag control unit 68402854AD do?

The airbag control unit 68402854AD is the central control unit of the restraint system (SRS) of Jeep. It evaluates the signals of the crash sensors and decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

During operation the unit monitors the connected sensors, lines and output stages. It stores faults in the fault memory and shows them via the airbag warning light in the instrument cluster.

Because the decision has to be made so quickly in an emergency, the safety of the occupants depends directly on an intact control unit.

Why does the control unit 68402854AD fail?

The most common cause for the 68402854AD is stored crash data after an accident, even if no airbag was triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump starting.

Crash data stays in the unit and cannot be erased with a normal diagnostic tool. That is exactly why an accident in which nothing was triggered can still lead to a fault.

The other causes act over a longer period or through environmental influences. Moisture attacks contacts, corrosion increases the resistance, and voltage spikes strain the electronics.

How can you tell that the 68402854AD is defective?

A defect in the 68402854AD shows when the airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears, or the diagnostic tool gets no connection to the control unit. A fault memory that cannot be erased is a further sign.

The warning light is the most important indication, because it reports a fault in the restraint system. If it lights up, airbags and seatbelt pretensioners may not trigger in an emergency. Therefore have the display checked promptly.

Even if the light comes on only briefly or the error message disappears after starting, a fault may be present. An inspection then provides clarity.

Which vehicles is the 68402854AD fitted in?

The list shows the vehicles in detail. The control unit 68402854AD is fitted in these vehicles: Jeep Compass MP (2016-2020) and MP Facelift (from 2020).

These vehicles are listed for this part number:

• Jeep Compass MP (2016-2020)
• Jeep Compass MP Facelift (from 2020)

Compare the part number on the label of the removed unit with this page, so that you definitely have the right unit. Also have the fault memory read beforehand: only the result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers A2C13501200.

How does the repair of the 68402854AD work?

For the 68402854AD, first have the fault memory read and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online. Then send the unit in well packed. Processing at Airbag24 generally takes 3–4 working days.

Airbag24 tests the unit on the test bench, replaces defective components and erases the stored crash data. A functional test follows, after which your own, repaired unit is returned to you.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 68402854AD get to Airbag24?

Send the 68402854AD as a parcel, or arrange a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

Enclose the printed repair order in the parcel and pack the unit shock-proof.